Excavating-machine.



iiniriin .STATES PATENT onirica. L

WILBUP NATHANIEL MORRILL, OF LOUISVILLE, 4KN'IIUCKY.

EXcA'vA'rmG-MACHINE.

No. '892,538V

Spcification of Letters Patent.

Patented Juiy 7, 190s.-

Application led April 11, 1908. Serial No. 426,421 I To all whom itmay-concern: i Be it known that I, lViLBUR i'A'rHANIEL A MRRiLL, lacitizen ofthe. United States, r e.

siding vat Louisville,-Jefferson county, Kentucky,-have invented'certa-in'new and useful Improvements in Excavatiiig-ltiaf-.hines, ofwhich the following is a specification.

This invention belongs to that class cliencavating apparatus intended-niainly for use .in sewer construction or pipe-laying work,

and lesgned to excavate t ie dirt in'advancfe of the sewer or pipe workand to back-filltlie excavated in aterial over the comple/ ted work.

My present invention aims to iin Y reve niacliines of this class byrenderingt iein more 'eficient' and elastic in their' operations, thatis to say, better adapted for doi'igtheir work eoiioinically' and -underthe varying conditions apt to be met with in practical operatimisf :Myinvention will be'readily understood from the Following descriptiontaken in con-l nection with the accompanying drawings in which:--- i'Figure 1 isa side elevation ol" an excavating machine exempliiying myinvention, the. trench appearing inverticalilongitudinal section: Fig. 2a planet the machine: Fig. 3 a rear elevation ol the excavator' proper,the trench appearing in vertical transverse section: Fig; 4 a verticaltransverse section 'of theiconve ine` car and its track:

and Fig. 5 an enlarged reproduction 'ol' the central por tion of I* ig.4;

vIn the drawingssml, indicates a' pair of rails forming aloiigitudiualtrack straddling the location of'tlie'trench: 2, the. material to -beexcavated at the heading of the trench:

3, the complete(l-portion of the trench, shown as being-protmitediii'tlie usual manner by sheet piling: 4, coi'iil'ileted'sewer work inthe trench: 5, back-filling over completed portions of the sewer work:(i, a'locoiiiotive cxcavating car iiiouiited'to run on the track rails:'7, a' jib turntablecrane mounted to turn on the excavating car: 8,motive power machinery carried by the crane for operating it and itscar: 9, aclamshell excavator suspended vfrom the jib of the crane: 10,along conveyor i car, ol,- skeleton construction, mounted to travel onthe track to the rear of the excavating car: 1l, a` longitudinal seriesof horizontal rollers supported by tlieframework of the conveyor carwith their axes parallel with eacl1 othcr and` transverse tothe lineofthe track: 12,'two longitiulinal series where lconcave or gutter-'likeform: A154, the rear end trench lwill permit. heading of the trench willbe excavated by the clamshell and -hoisted aud delivered into the hopperof the pulvei'z'er which, in turn., delivers the material to thegutter-.shaped of rollers carried by the frame-work ol' the 'conveyorcar above the level of the rollers 1 L,

therolls 12 being arranged iii pairs, tlieaxes of the two rolls-of apairdeclining inwardly:

413, an endless conveyor belt engaging rolls at `eacli end oftho`conveyer car, the lower lealI of this belt ruiming upon the rollers11, and

its uplper leaf ruiming upon the rollers 12 )y thejupper leaf of the'belt is given a of the conveyer ear and belt, 'thisend `projecting, as acantaliver, rearwardlyY beyondthe rearwheels ot the car: 115, apulveri'zei mounted on 'the front end of .the 'conveyor car and arrangedto diseharge upon the front upper leaf of tl-ie'coriveyer bell', whichbelt conveys' the material rearward-ly and backfills it iiito thetren'eli over the completed sewer work.

Were-working normally a'id the excavating and sewer building andback-lili'iiig could advance uniloi'n'ily. ,But if `(',oi-idilions'arise iii which the sewer building, and consequeutly -tlieback-filling, must be delayed, the.

exeaii'ating must be proceeded with, tlieexcavated material in such casebeing deposit ed at the sides of' the trench.

iii desired, be uncouplcd .from the cx avatiug car. suined orhas caughtu then the excavated materialdeposited att ie sides of llie trench Vmaybe pic (ed up by the clamshell` and delivered to the )ulverizer to be'conveyed baek bythe. belt ain delivered into tlietreiieli over thecompleted work,

' ln Fig.- 1 the apparatus is illustrated asexcavating between theexcavating ear aiid'tlie conveying ear, but the 'clamshell may workahead 'of the excavating ear, its loads being The Work of the apparatuslwould thus .proceed regularly il e\'ei \flliiiig 'lndei these coib-'ditions the conveyor cai' willbe idleaiid may,

lrVhen. the sewer-building has been re` then swun around and deliveredto the pulverizer. ien conditions arise not permitting all excavatedmaterial to be back-illed then the clamshell may deliver its loads to-Wa ons alongside the trench. The clanishe l may alternate in itsworking in advance i of and behind the excavating car so as to providefacility for the proper and gradual placing of the sheet piling. Forinstance, the excavatoi' may dig for some distance, working either tothe front or to the rear of its car,

A carrying the work to such depth as first calls for the placing of thesheet piling, the excavator then returning to perform the deeper WorkWhere the sheet piling has been already placed, and later returning tothe more advanced part of the trench.

I claim:-

1. Excavating apparatus comprising, track rails at the sides of theproposed trench, a locomotive excavating car mounted on said rails, aturntable jib crane mounted for rotation'on said car, a clamshellexcavator suspended from said crane, and motive power machinery mountedon said car for actuating the car and crane, combined substantially asset forth.

`end of the conveyor car and adapted to discharge upon the forward endof said belt, motive power machinery' mounted on said conveyer car foractuating said belt and pulverizer, and detachable connections betweensaid locomotive car and conveycizcar, conibined substantially as setfortlr4 3. Excavating apparatus comprising, track l l l eeasse -rails atthe sides of the proposed trench, a

rails at the sides of the proposed trench, a

long conveyer car mounted on said rails, a l

longitudinal series of transverse rollers carried by said car, twolongitudinal series of inwardly declining rollers carried by said carsabove the first-mentioned rollers, an endless conveyer belt having itslower leaf supported by the iirst-mentioned rollers and having its upperleaf supported in gutter form by the upper rollers, an excavator infront of said car, and motive power machinery for actuating theexcavator and belt, combined substantially as set forth.

5. Excavatingap aratus comprising,track rails at the sides o theproposed trench, a long conveyer car mounted on said rails, alongitudinal series of transverse rollers carried by said car, twolongitudinal series of inwardly declining rollers carried by said carsabove the first-mentioned rollers, an endless conveyei belt having itslower leaf supported by the first-mentioned rollers and having its upperleaf supported in gutter forni by the upper rollers, an excavator infront of said car, a pulverizer carried by the front end of thc car andad aptcd to' receive material from the excavator and discharge it uponthe front end of the u )por leal' of said belt, and motive power meclanisin for actuating the excavator and ulvcrizer .and boli', conlbinedsubstantiafiy set forth. i

Witnesses:

HARRY A. Bunch', ALFRED li. Couric.

